Transmission-gearing



- A. J. MEYER.

TRANSMISSION GEARING.

APPLICATION FILED JUNE 30,1917.

1,356,728. Patented Oct 26, 1920.

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KINVEN TOR.

A TTORNEY WITNESS UNITED STATES PATENT;

vauernsr i. MEYER, or orrrcaeoQrrrnvors;

TRANSMIssION-GEARING.

' Application'filed June 30, 191% Serial No. 177,849.

To a-Zlwhom z'tmay' concern:

Beit known that 1, AUGUST J. MEYER, a citizen. of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Transmission-Gearing,of which the following is a specification. 7

My invention relates to-an improved con struction of transmission gearingfor use on motor vehiclesv and is characterized by, a construction by which the clutches and gears employed in securing the desired speed ratio are relieved of driving pressure before shifting from one condition of operation to another, as, a result of which the wear on the clutches and gears resulting from the shifting. from one operating condition to another is reduced to a mini- 7 line 2-2 in Fig. 1, and

mum. Furthermore by my construction I reduce the number of working parts to a minimum, ,.for. example, for -two speeds ahead and onespeed on reverse 1 require but six gearsp While my improvedj construction is particularly for use with small motor vehicles it is not limited to this use as it may be built in any'desired size and for any desired purpose. 1

My invention will best be understood by reference to the accompanying drawings showing a preferred embodiment thereof in which: J

Figure 1 shows the transmission mecha-. nism in plan view and partially in hori-' zontal sectional view taken through the axis of the driving shaft, the cover ofthe casing being removed to more clearly show the mechanism, 1 V

Fig. 2 shows, in elevation the working parts shown in Fig. 1, the casing being shown in the section taken along the broken Fig. 3 is'a diagrammatic endview show- Similar numerals refer to similar parts throughout the several views.

As shown in the drawings a power shaft 10 is connected with amain clutch 11 oper- I ated by a plurality of levers 12 pivotally of the levers 1 2 is shown since the main clutch in and of itself forms no partofmy' Specification of Letters ratent. Patented Oct.'26,1920

present invention and may be of any wel'lknown type adapted to beset by the action of an operatingspring as shown, for example at '16 1n thedrawings, the. clutch illustrated in the drawings being ofthewell? knownmultiple disk type. 1 The main clutch is contained in one endofacasingl? which provides a bearing forthe outer end of the driving sleeve 15 at 18., A groovedcollar 19 is mounted on the driving sleeve v1 5 so that it may move longitudinally thereon, I r

and in the groove ofthe collar, a slipring 20 is disposed having trunnions 21 which are engaged by the ends of a forked lever 22 pivotally support d at 23 by a bracket 24 carried by the casing The spring 16 which is of the compression type rests at one end against the collar19 and atthe other end against an enlarged portion of the sleeve 15 and this spring is of sufficient strength to move -the collar 19 tofset the main clutch when the lever- 22 is relieved from the strain exerted upon it in com-'. pressing, the spring 16 to release the main clutch. To economize" space the enlarged outer end of the sleeve. 15 is provided with 1.

an annular recess :to receivev the end of the spring .16-andwhile 'the enlarged end; of the driving sleeve is shown as made from one'piece of metal it will *be understood that this portion of the construction may} ;y

be built up from a number of'pieces of metal secured together. if desired. driven shaft 25 is provided at its outer end with a bearing carried by the casing the The 7' other end of said driv en shaft havin'g rig idly secured thereto a sleeve 26 freely roe tatable in the bore of the driving sleeve 15 as a result of which'thedriven shaft is rotatably supported at its inner endby the bearing18through the intervening portion ofthe driving sleevel5.- The sleeve 26 has formed on its right hand end as shown. in the drawings, a flange27 which provided with clutch jaws 28' extending axially from.

said flange inside of axial arms 29 project} ing from the end of the enlarged portion of the right hand end of the sleeve 15. I The shaft 25 carries immediately to the right of its sleeve 26and the parts'carried there by a second sleeve 80 which is free to move a sleeve 46. The gear 45 and the sleeve 46 longitudinally and angularly upon said shaft. The left hand end of the sleeve 30 is provided with extending arms 31 which carry clutch jaws 32 for engaging the clutch jaws 28 when the sleeve 30 is in its left hand position. The" arms 31 are made so'that they are a sliding fit between theedges of the arms 29 and the arms 29 are of a length to engage the arms 31 for any position of the sleeve 30 on the shaft 2 5' as a result of which the sleeve 30 is driven 'by theengagement of the arms 29 and 31 regardless of Whether the sleeve 30 and the shaft 25 may be rotating at the same or difl'erentspeeds. The right hand end of the sleeve 30has rigidly secured thereto a pinion 33','which together with a flange 34 extending from the sleeve 30 forms a groove pable of longitudinal motion thereon but is prevented from moving angularly there'- on by splines 41'. To increase the bearing surface of the collar 407011 the shaft 25 it is extended 'to the left in the form of a sleeve 42 which is a sliding fit in a counterbore provided therefor in the right hand -endof the'sleeve 30. The collar is provided with clutch jaws 43 for engaging 7 similar clutch jaws 44 carried by the gear 45 which is rigidly mounted on a sleeve 46 which is a slidingfit 'on'the shaft 25; The sleeve 46 is 'providedwith a bearing in the casing 17 at 47, as a result 'of which the driven shaft is rotatably supported at its right hand endby the'casing through the are prevented from moving longitudinally on the shaft 25 by any suitable means, for example by the ends of the splines 41. The casing 17 is provided near its right hand end with an offset portion 48having' bearings 49 for'an intermediate shaft 50 which has rigidly secured thereto near its left hand end a gear 51' for meshing with the pinion 33 when the latter is in its right hand position. The shaft 50 has mounted thereon to the right of the gear 51, a pin- "ion .52 which is longitudinally movable'on the shaft 50-and is provided with an extension containing a groove '53 for the receiving of a shifting yoke 54 connected by an arm 55 with a slide 56' supported in a suitable guideway-in the casing so that by motion of the slide, by means to be described, the pinion 52 may be moved longitudinally on the shaft 50 into mesh with the gear 45 or out-of mesh therewith as desired. The casing 17 also carries in suitable bearings below and between the shafts 25 and 50, a second intermediate shaft 57 which has rigidly secured thereto'the gears 58 and 59. The gear 58 is in mesh at all times with the gear 45 and the gear 59 is adapted to mesh with the pinion 52 when the latter is moved to its right hand position as shown in the drawings. Angular motion of the pinion 52 on the shaft 50 is prevented by the splines 60 engaging the shaft {and pinion as a result of which it will be'observed that rotation of the shaft 50 for the position of the pinion 52 shown in the drawings rotates the gear 45 in one direction, whereas the same direction of rotation of the shaft 50 drives the gear .45 in the reverse of its first direction of motion when the pinion 52 is in its right hand position on the shaft 50. This portion of the mechanism constitutes the reversing gearing of the transmission mechanism. The relation of the reversing gears is more clearly shown diagrammatically in Fig. 3. I D

As shown in Fig. 2the slide 38 is provlded with-jaws .61 for receivingthe end of a,

lever 62 which is rigidly secured to a shaft 63 extending transversely acrossthe upper portion of the' casing 17. The shaft 63 also forms the pivotal support for the speed changing treadle 64 whichis provided with an extending arm 65 pivotally connected at 66 withone end of a link 67 the other end of which is pivotally connected at 68 with the upper end of the lever 22. The parts are soproportioned that when the pivotal connec-. tions 66 and 68 are in line with the shaft63 the slide 38 and parts'carried thereby are in substantially their mid position and the lever 22 is in a position compressing the spring 16 so as to fully release the main clutch 11. The treadle 64 is provided below its pivotal support with lugs 69 and 70 which extend upon either side of the lever 62 with sufficient clearance between them so that when thetreadle 64 is in either its lower or upper position, said treadle may be moved sufliciently from its extreme position, for

which the mainclutch is fully engaged, to a v position permitting said clutch to slip without motion of the lever 62. The arm 65 is provided with a cup shaped extension 71 for receiving the upper ends of the springs 72 and 73, the lower ends-of which rest in a cup 74 carried by the casing. These'springs 72 and 73 are taken of such a strength that their combined action is sufiicient when the treadle 64 is in its lowermost position to lift the treadle and parts carried thereby against the action of the spring 16 to fully release the main clutch 11 and disengage the gears and clutch aws from their engaged relation. The spring .7 3 1S stronger than the spring 72 andso proportioned as to assume its free position just before the pivot 66 is raised into line'with thepivot 68 and the shaft 63, since comparatively small effort is required .to movethe pivot 66 past its mid position, after which the spring 16 tends toraise the pivot 66 and treadle 64 so as to move the slide38 andparts carried therewith to their left hand position. From the above it will apfully depressed position or in its uppermost position the main clutch when properly adpear that with the treadle 64 either in its justed is fully set and that for motion of the treadle. in either direction the lever 62 lags behind the treadle 64 as much as the clearing between the lugs 69 and 7 0 will permit, or in other words the initial motion of the treadle from either of its extreme positions serves to release the main clutch somewhat thus permitting it to slip before continued motion of the treadle operates'the lever 62.

The slide 56 is provided with aws 75 for receiving the lower end of a lever 76 supported on a transverse shaft 77 carried by casing 17 which shaft has rigidly secured thereto the reversing treadle 78. A spring 7 9 .is provided for holding the reversing treadle '78 in its uppermost position which corresponds to driving the motor vehicle in its forward direction, as a result of which it will appear from the gearing above described that when the treadle 7 8 is depressed the reversing gearing'is moved to a relation reversing the. directionvof motion of the driven shaft andtherefore of the vehicle.

In connection with transmission mechanisms of the kind described above as illus:

.trating my present invention it is the general practice to, provide the motorvehicle with an emergency brake, which when it'is in its set position places the gear shifting treadle inits middle or neutral position which is the condition of themechanism required. for starting the engine; 1

l/Vhile my invention does not pertain specifically to any particular form of emergency brake mechanism, I have illustrated somewhat diagrammatically a portion of such a mechanism .to illustrate a means for holding the gear shifting treadle in its neutralposition when the apparatus is not in service and to illustrate the starting condition of themechanism when it is desired to bring the driven shaft 25 fromrest either to low speed or'high speed or to reverse the direction ofrotation of said driven shaft'while the driving or engine shaft is continuously rotating in the same direction. I ,QAS shown in Fig. 2 an emergency brake lever 80 isshown pivotally supported at 81 from the casing 17 a ratchet segment 82 being provided to engage a spring catch 83 to hold the lever 80 in its position setting the emergency brake in a manner well-known in the art, which position is that indicated in Fig. 2.. The pivot endof the lever is pro} vided with extending arms 84 and 85 carryspectively above and below the gear shifting treadle 64. Asa result of the construction.

ing projecting pins 86 and 87 which lie rep described if the treadle 64 is in its upper position when the emergency brake is set itis moved to its mid position by the pin 86-and motion downwardly fromits mid position is prevented by the pin 87 so as to insure that the main clutch shall be in its fullyreleased position when the engine and shaft 10 are started and brought up to' speed.

The operation ofmy mechanism is as '80 follows: i 1

Assuming thatthe shaft 10 is rotating at proper speed as a result of its connection withv the engine, the emergency brake having first been released while-the'treadle 64 is held by the foot in its mid position, the

treadle 64 i gradually depressed which permits the spring 16 to move the parts of the main clutch toward theirclutching position and at the same time by the operation of the lever 62, the sleeve 30 is moved to the right on the shaft 25 to bring the pinion 33 into mesh with the gear 51 For this position of the treadlethe driving sleeve15 through;

the arms 29 and 31 rotate the'pinion 33 which in turn drives the gear 51' and the latter through the shaft 50 and the pinion 52 serves to rotate the gear 45, assuming that the main .clutch parts have been brought sufficiently into engagement with each other to rotate the driving sleeve 15.

As a result of the relative diameters ofthe gears and pinions referred to and which maybe substantially a indicated in the drawings the gear 45 is rotating more slowly than the sleeve 30, and the collar 40 and shaft 25 have not as yet been caused to rotate. Further downward motion of the treadle 64 moves the clutch jaws 43 .sufliciently to the right to engage the clutch clutch jaws 43 and 44 into their fully. engaged position serves to move the parts of ward motion of the treadle 64 to bringthe the main clutch 11 to their fully set position' o that a positive driving relation is established between the shaft 10 and the sleeve 15 for which condition the driven shaft isoperated at low speed. To throw the transmission gearing into high speed, I

pressure on the treadle 64 is released for which condition the springs 72 and 73 raise the treadle, the first effect being suflicient to release the mechanism of the main clutch so that the driving sleeve is not positively operated for which condition the pressure between the clutch jaws 43 and 14 is reduced practically tozero at which time,

. the lug 70 and the lever 62.

without serious friction and wear. 'ference: in the strengths of the springs 72 however, the lever 62 has not as yet been operated to disengage the clutch jaws' 4C3 and 4 1 as a result of the clearance between '70 engages the lever 62 to remove the clutch jaws 43 from engagement with the clutch jaws 4A and the pinion 38 from engagement with the gear 51 the driving force communicated to the driving sleeve 15 is so small that this disengagement of the parts re- ,ferred to is readily effected without serious friction orwear.

Further upward movement of the treadle 64 after disengagement of the clutch jaws and gear referred to, moves'the clutch aws 32 and 28 into engagement with each other 'tion of the spring 16 a a result of which the driven shaft 25 is brought gradually from low speed to high speed through the slipo-f the main clutch thus eliminating the shock which would otherwise accompany the'engagement of the jaws 28 and 32. For this condition of the mechanism it will be "seen that the'shaft 25 is driven directly from the sleeve 3 0 through the engagement of the clutch jaws 28' and 32.

WVhen it is desired to disengage the clutch jaws 28 and 32 or in other words to release the engine from the load, the first portion of the downward movement of the treadle 64: operates the lever 22 nearly enough'to disengage the parts of'the main clutch before the lever 62 is operated as a result of the clearance at that time existing between the lug 69 and the lever 62. There is therefore at the'time of operating the 'lever 62 little driving force exerted on the 'ClIlVll'lQ" sleeve 15 and theclutch aws 28 and 32 are readily disengaged from each other The clifand 73 is preferably sufficient so that when the treadle 64: is being moved downwardly its engagement with the spring 73v affords the operator an indication of when the 'treadle is in substantially its mid position.

When it is desired to rotate the shaft 25 1n a reverse direction, the treadle 64' is When the lug first permitted to assume its midposition and the treadle 78 is-moved to itsidepressed position thus changing the operating relation of the reversing gears above referred to,q for which' condition ofthe treadle 78 the treadle '64 is depressed in the same man her as above described for establishing-a low forward speed of the shaft 25,:the only difference "now being that as a result of the reversed relation of the reversing gearing the shaft 25 is now caused to rotate at a low speed in a direction the reverse of that previously caused at low speed; As a result of the construction and operation above described it will-be observed that I have provideda transmission mechanism in which the gears are relieved of load when they are being shifted into engaging relation with each other and that "therefore there is no danger whatever of damagingthe gears by shifting them into driving relation, and furthermore that. at thetime of engagement or disengagement of any of the clutch jaws the driving force is small and therefore the effort required to move the clutch jaws into engagement -with each-other or to disengage them from each other is a minimum and wear on the clutch jaws as well as on the devices involvedin shifting the jaws into and from-either driving condition is reduced to a minimum.

It will also be observed that when the. parts are in a position 'driving the shaft- 25 athigh-speed, there are no driven gears in my mechanism, since for this condition the pinion'33 is entirely disengaged from theremaining gearing. V v

While I have shown my invention in the "particular embodiment above described it -will be understood that I do not limit myself to this exact construction as Inlay employ equivalents thereof known'to the art at the time of the filing of this application Without departing from the scope of the appended claims. v 1 What I'claim is:

"1. In a transmission mechanism, the combi'nation-of a power shaft, a driving shaft, a driven shaft, a-main'clutch between said "power shaft and said driving shaft, two sets of clutch members for driving said driven shaft from said driving, shaft, and

power shaft and said driving shaft, two "sets of clutch members for driving said dr ven shaft from said driving fshaft, and

'125 -a driven shaft, a main clutchbetween said j a common operating mechanism for setting said main clutch ,andengaging either set of said .cliitch 'meinbers when said main 7 clutch is biit' partly set, continued motion vfrom each other, n

3. In a transmission mechanism, the comof said operating mechanism serving to fully set said main clutch, and motion of said operating mechanism in the reverse direction partially disengaging said main fcl itch before moving said clutch members relsaid operating mechanism in said reversed direction servingto disengage said main bination ofa power shaft, a driving shaft, adriven shaft, .a main clutch between said. power shaft andsaidb driving shaft, two sets of clutch membersfor driving said driven shaft from either set'of said driving shaft, and a common operating mechanism for Vsetting said inain clutch and engaging sald' clutch members, said operating mechanism comprising treadle, a

first element connecting said treadle and the 'main clutch, and'a second element con-' necting said first element and oneof each set of clutch members, there being a delayed engagement between said first and I second elements whereby the operation of said second element lags behind the operation of said first element.

4; In a transmission mechanism, the com bination of a power shaft,'a driving shaft,

i driven shaft, a main clutch between 'said power shaft and said drivingshaft, two

sets of clutch 'inembers foredriving'said driven shaft'from said driving shaft,- and a common operating mechanism for setting said main cliitch andengag'ing either set of said clutch members, said operating mechanism comprising a treadle and two operating trains, one train extending from said treadle to said main clutch and the other" V V binationof a power shaft, a driving shaft, a

driven haft, a "main clutch between said power shaft and said driving shaft, clutch train extending from said treadle to one of each set of said clutch members, there bee ing a slip in said second train, whereby operation of said treadle operates sa1d main.

clutch before operating said-clutch members. i

'5. In a transmission mechanism, the combination of a power shaft, a driving shaft, a driven shaft, a main clutch between sa d power shaft and said driving shaft, two

sets of clutch members for driving said driven shaft from said driving shaft, and acoinmon operating mechanism for setting said main clutch and engaging'eitherset of: said clutch members, said operating mechanism comprising a treadle'and two ojperating trains, one train-extending from said treadle to said main clutch and the other V inechanismfor setting said-main clutchand i train extending from said treadle to one'of each set of said clutch members, there being a slipin said second train, whereby opera tion of said treadle in either 'direction op said clutch members. g 6. Inat'ransinission mechanismythe combination' of a power shaft, a driving'shaft, a driven shaft, "a main clutch between said power shaft and said driving shaft,"clutch erates said mainv clutch before operating members for driving said driven shaft from] said driving shaft, and a commonop'erating T mechanism for setting aid main clutch and engaging said clutch members, said operating mechanism comprising a treadle, a first lever connected with'said main clut'ch,.a'sec ondlever. connected with said treadle, a connecting said levers,- athird lever connected with one of: said clutch members and free from said treadle, and lugs carried by 7 said treadle for engaging said third lever,

therebeing a; clearance between saidilngs and said third lever. I i 'f,

'7. In transmission:mechanism, the coindriven shaft, a main clutch between said power shaft and said driving shaft, clutch said driving shaft," a -fcommon operating mechanism for setting said main clutch'and engaging; said clutch members,'' said operating mechanism comprising a -treadle,-a' first lever connected with said main cliitch, a second lever connected, with said treadle,

8 5 bination of a power shaft, a driving shaft, a

members for driving said driven shaft ;from

a link connecting said levers, a third lever connected with one'of said clutch members and free from said treadle, and lugs carried by said treadle for "engaging said third lever, there being a clearance between said lugs andsaidthird lever, afirst spring tend ing to set said main clutch and move said- 7 second lever to-both'of its extreme positions,

and a second spring maintainingxsaid 'treae dle in its upper position against the action of said first spring when said treadle is'free from restrainingrforce. f 1 i1 8. In a transmission mechanism, the commechanism for setting said main clutch and V engaging said clutch membersiwhen said maincliitch is but partly set, continuedrnok tion of said operating mechanism serving to gearing between driven shafts;

fully set said main clutch, and red icing said driving 9. In a transmission 'mechani m,; he com! 'bination of a power shaftpa" drivingshaft, av driven shaft, a main clutch between said power shaftand said drivingfshaft, clutch membersfor driving aid driven shaft fromsaid drivingjshaft, a common operating tion of said operating mechanism serving to fully set said main clutch,land motion of 7 said operating mechanism in the reverse direction partially disengaging ,said main .chitch before moving said clutch members ,relatively'to each other, continued motion .-of said operating mechanism in said reqversed direction serving "to disengage said 31113111 clutchv and separate sa1d clutch mem- .bers fromleach other, and reducing gearing between'said driving and said driven shafts. 7 1,0. In a transmission mechanism, the

ecombination of a power-shaft, a. driving shaft, a driven shaft, a main clutch between a driven shaft; from said driving shaft, a comsaid power shaft 'andfsaid driving shaft, two

sets of clutch members for driving said mon operating mechanism for setting said element and one of each set of saidclutch members, there being a delayed engagement if main clutch and engaging either 'set of said clutch members, said operatingfmechanism comprising a treadle, 'a first. element con- I nectingisaid treadle and the main'clutch,

and a second element connecting said first between. said. first and second" elements .whereby the operationof said second'element lags behind'the operation of said first element, and reducing'gearing between said.

driving and said driven shafts,

,11'. In a transmission mechanism, the

' combination of a power shaft," a driving shaft, a driven shaft, a main clutch between 1 said power shaft and said driving shaft, two 7. sets of clutch members for. driving said driven shaft from said drivingshaft, a common operatmgmechanism for setting sa1d mainclutch and engaging either set of said. clutch members, sa1d operatmgmechamsm:

; in said second train, whereby operation of. sa1d treadle operates said mam clutch before I operating said clutch members, and reducing gearing between said driving and said;

driven shafts. 5 I v 12.'In a, transmission mechanism, the combinatlon of a. power, shaft, a driving shaft, a driven shaft, a: main clutch between Saldj POWBI shaft and said driving shaft, qtwo sets of clutchmembe rsfor driving said driven shaft from said driving shaft,a,com-

mon operatingmechanism for setting saidj main clutch and engaging either set: of'saidt l clutch" members,- said operating -mechanism' comprising a treadle, and two operating trams, one tram extending from said treadle Q tol -said main clutch and the other train ex-' tending from said treadleto one of each set:

io f said'clntch members,*there being a slip I in said-second train, whereby operation of' main clutch,before'operating said clutch members, and reducing gearing ,between said drivingand said driven shafts. p

13. In a' transmission mechanism, the combination of, a power shaft, axdriving shaft, a driven shaft, a mainclutch be tween said, power shaft and..said driving shaft, Clutch 7 members for driving said driven shaft from said drivingv shaft, a. commonoperating mechanism .for setting said main clutch and engaging said clutch members, said'operatmg mechanism come prlsmg a treadle, afirst lever connected w th .said main clutch, a second leverconnected .w1th sa1d treadle, a link connecting said levers, a third lever-connected :Wltll one of said clutch membe's' and free from-said treadle,'and liigs carried by jsaid treadle for engaging said. third lever, there being a clearance between saidlugs-and said third lever, and reducing: gearing between said driving and said driven shafts,

14. 111 a transmission mechanism, the combinatlon of a power shaft, a drivlng shaft, a drivenshaft, a main clutch between said power shaft and said driving shaft, clutch members for drivin'gsaid driven shaft from said driving shaft, a common operating mechanism for setting said main clutch and engaging said f clutch members, said operating mechan sm COHIPTISHIg a treadle, a first lever connected'w th sa1d mam clutch,

a second lever connected'with'said treadle, a link connecting said levers, a thlrd lever connected with one of sa1d clutch members and free from said'treadle, and lugs can rled by SillCltlGfiCllGfC-D engagingsaid third lever, there being clearance between said lugs. and said third lever, a first spring tendmg to set sa1d mam clutch and movesaid second lever to both'offits extreme positions," -a second spring maintaining sa d treadle in its upper position'against theaction of said first spring when said treadle is free from restraining force, and reducing gearing between said driving and saiddriven shafts.

15. In a transmission mechanism, the combination of a power-shaft,a-driving shaft, a driven shaft, a main clutch between said powerv shaft and said driving shaft, clutch members for driving said driven shaftfrom said driving shaft, a comnion operating mechanism for setting said main clntchand engagingsaid clutch members when said main clutch is but partly set, con;

tinued motion of said operating mechanism serving to fully setsaid main clutch, re-

re dncing gearing between v said driving and sa1d drivenshafts, and a second setof clutchmembers for driving sa1d di'lven shaft from,

said driving shaft in a one .to one ratiofone of the clutch members of Isaidjsecond set I being connected with andoperatedby said v operatingmechanism.

.; .fsaid treadleimeither directionoperates. said 1 16; In a transmission .niechanism, the

shaft,a driven shaft, a main clutch between said power shaft and said driving shaft, clutch members for driving said driven shaft from said driving shaft, a common operating mechanism for setting said main clutch and engaging said clutch members When said main clutch is but partly set, continued motion of said operating mechanism 1 serving-to fully set said main clutch, and motion of said operating mechanism in the reverse direction partially disengaging said main clutch before moving said clutch members relatively toeach other, continued m0- tion of said operating mechanism in said reversed direction serving to dlsengage said "mam clutch and separate said clutch members from each other, reducing gearing between said driving and said driven shafts, and a second set of clutch members for driving said driven shaftfrom said'driving shaft in a one to one ratio, one of the clutch, members of sald second set being connected" with and operated by said operating mechan1sm,"m'ot1on in said first dlrection serving to disengage said, second set of clutch members,fand motion in said-reversed direction serving to engage said second set of clutch 'memb'ers. Y V 1 "17. In a transmission" mechanism, the combination of a power shaft, a driving shaft, a driven shaft, a main clutchlbetween said power shaft and said driving shaft,

clutch members for driving said driven shaft from. said driving shaft, a common operating-mechanism forsetting said main clutch and engaging said clutch members, said operatin mechanism comprising a treadle, a first element connecting said treadle and the main clutch, and a secondv element connecting said first element and. 'one of said clutch members, there being a delayed engagement between said first and second elements whereby theoperating of said second element'lags behind the'operation of said: first element,-redncing gearing between said driving and said driven shafts,

and a second set of clutch members fordriving said drlven shaft from sa1d drlv ng shaft in a one to one ratio, one ofthe clutch members-0f said second set being connected with and operated'bv said second element.

18. In a transmission mechanism, the combination of a power shaft, a driving shaft,

'a driven shaft, amain clutch between saidpower'shaft and saiddrivingshaft, clutch; members for driving said driven shaft from said driving shaft, common operating mechanism for setting said main clutch and engaging said clutch members, said operat-' ing mechanism comprising'a' treadle and two operatingtrains, one trainextending from said treaflle tosaid main clntchiand the other train extending from said treadle to one of said clntchmembers, there being a slip in sald second tram, whereby operaing connected with members fordriving said driven shaft from tion of said treadle operates said main: clutch I before operating said clutch 'members, Ireducing gearing between said" driving and,

said driven shafts, and a second set of clutch members for driving said driven shaft from said driving shaft in a oneto one ratio, one of'the clutch members of said second set beand' operated' by said second train. I p V a 19. In a transmission mechanism, the com-' binationof a power shaft, a driving shaft, a driven shaft, amain clutch between said power shaft and said driving'shaft,"clutch said driving shaft, a common: operating mechanism for setting sald'mam clutch and engaglngsaid clutch members, said operating mechanism comprisingga treadlefand two 1 operating trains,-one train extending from said' treadle r to said main clutch and the other train extending'from said treadle to one of said clutch members, there being a slip in said second train, whereby operation of said treadle in either direction operates said main clutch b'eforeoperating-said clutch members, reducing gearing: between -saidfrom said'driving shaft, a common'operate j ing mechanism forsettingsaid main clutch and engaging sa d clutch members, said {op- 'erating mechanismfcomprising a treadle, a

first lever connected with said main'iclutch,

a second lever connected withsaid treadle, a

link connecting said levers,ga' third lever connected with one of said clutch members and free from sa'idftreadle, and'lugs'carried bysaid-t'readle for engaging said third lever, f there being a clearance between said lugs and said third le'ver, reducing gearingbe tween said driving and said driven shafts} J: and a second set orclntch members for driving said driven-shaft from said driving with an d operated by said third levers 21; In a transmission mechanism, the combination'of a' power shaft, aidriving shaft, v v "driven shaft, J a 'main clutch between said power shaft: and said driving shaft, clutch v members forv driving said driven shaft from. said driving: shaft, a common ,1 operating mechanism for setting'said mainfclntch and engaging said clutch'members,said operating mechanismcompri'singratreadle, a first lever connected with said main clutch, a-

- shaft in a' one to one ratio,"one of the clutch 'members of sald second set being connected V 5 dle having upper, lower andmiddle operat second lever connected with said treadle, a

link connecting said levers, a third lever connected with one of said clutch members I and free from said treadle, and lugs carried by said treadle for engaging said third lever,

there being a clearance between saidlugs to set said main clutch and move said second 7 and said third lever, a first spring tending lever to both of its extreme positions, a second spring maintaining said treadle in its upper position against the action of said first spring when said treadle'is free from .restraining force, reducing gearing between said driving and said driven shafts, and a and operated by'said third lever.

second set of clutch members fordriving said driven shaft from said driving shaft in a one to one ratio, one of the clutch members'ofsaid second set being connected with 22. In a transmission gearing, the combi- I nationof a power shaft, a driving shaft, a

, driven shaft, a main clutch between said power shaft and said driving shaft, a treadle dle andreleasi'ng said clutch for the" middle position thereof, clutch members between said driving and said driven shafts, devices betweensaid treadle and one of said clutch members for engaging said clutch members.

tween said driving and said driven shafts controlled by said clutch members, a second set of clutch members betweensaid driving and said driven shafts, and connections between one of said second set of clutch members and said last mentioned devices having upper, lower and middle operatingpositions, devices between'saidtreadle and.

said clutch for setting said clutch forthe upper and lower positionsof said treadle and releasing said clutch'for the-middle po? sition thereof, clutch members between said;

driving and said driven shafts, and devices I by motion of said treadle to its lower posi- 'tionbefore said main clutch is wholly set.

bination .of a power. shaft, a driving shaft, adriven shaft, a main clutch between said power shaft and said driving. shaft, a trea dle having upper, lower and middle operbetween said treadle and one of said clutchv members for engaging said'clutch-members 23. In a transmission gearing, the com-;

ating positions, devices between said trea-' dle. and said-olutch for setting said clutch for the upper and lower positions of-said treadle and releasing said clutch for the} middle position thereof, clutch membersbetween said driving and said driven shafts, and devices between said treadle and one;

of said'clutch members-for engaging said.

I to its lower position beforesaidmain clutchis whollyset,there being. lost motion in;

said last named devices permitting said treadle to leave its lowerposition to partially release said mainclutch before moving'the connected clutch member, continued "motion. of said treadle to itsmiddle position servbersoffeither set." v-

' ing to disengage said clutch members; f; 24. In a transmission gearing, the 'com-=' bination of a power shaft,1a dr ving shaft,

I a driven 'shaft, a main clutch between said power shaft and said driving shaft, a-trea ingpositions, devices between said :treadle the upper and lowerpo sitionsjof said trea and said clutch for setting said clutch for whereby motion of saidtreadle to its upper position engages members.

said second set of clutch 25. In a transmission gearing, the combination of a main clutch, two sets of driv ing clut'ch members, and operating means connected w th said mainclutch and. one

of each set of said clutch members for relieving thepressure on the main clutch dur- .ing engagement of either set ofsaid clutch;

members.

26. In a transmission gearing,-.the' combi'nation of a main clutch, two sets of driving clutch members, and operating means connected with 'said main clutch and one ofeach set of saidclutch members for relieving the pressure on the main clutchduring, engage-. ment and disengagement of either set of said clutch members,

= 27. In a transmission gearing, the oom'- binatlon of a main clutch, a low speed train,

a high speed train, a "set of clutch members for each train, and operatingmeans connected with said main clutch and one of the pressure on the main clutch. during engage- 'ment ofthe clutch members of either set. clutch members by motion of said treadle bination'of a main clutch, a low speedtr'ai'n, a high speed traimaset of clutch members" 28. In a transmission gearing, the com for each train, and operating means connected with said main clutch and one of the clutch members of "each set for relieving the pressure on the main clutch, during engagement and disengagement of. the clutch, memerating means 'connectedwith said main clutch each-set of said clutchmembers andsaid gears for relieving the pressure on the main clutch during the engaging'of said gears with each other. and'during the dis I ber.

main clutch during engagement and disen-" gagement of said gears and of said clutch members.

31. In a transmission gearing, the combination of a driving shaft, a driven shaft, a pinion rotatable with the driving shaft, a clutch member rotatable with the driven shaft, and a connection between. said inion P and said clutch member preventlngaxial parts being supported by said driven shaft, 7 sa1d pin ion being movable angularly and longltudinally on said shaft and said clutch member being capable of longitudinal motion only on said shaft. i

33. In a transmission gearing, the com-i bination of a driving shaft, a driven shaft, a pinion rotatable with the driving shaft, a

clutch member rotatable with the driven shaft, a connectionbetween said pinion and said clutch member preventing axial motion and permitting angular motion of one of said parts relatively to the other, said parts being supported by said driven shaft, said pinion being movable angnlarly and longitudinally on said shaft and said clutch member being capable of longitudinal motion only on said shaft, a second clutch member rigidly secured to said pinion, and a third clutch member secured to said driven shaft for engaging said second clutch mem- 84. In a transmission gearing, the combination of a driving shaft, a driven shaft, a pinion rotatable with the driving shaft, a clutch member rotatable with the driven shaft, a connection between said pinion and said clutch member preventing axial motion and permitting angular motion of one of sail parts relatively to the other, said parts being supported by said drlven shaft, said pinion being movable angularly and longitudinally on said shaft and said clutch mem ber being capable of longitudinal motion only on said shaft, a second clutch member rigidly secured to said pinion, a third clutch member secured to said'driven shaft for engagingsaid second clutch member, a tra n of gears for engagingsaid pinion, one of the gearsof said train being rotatable on' said driven shaft, and a fourth clutch member carried said gear 'for engaging theifirst if mentioned clutch member. v

35. In a transmissiongearing, the combi-, nation of a driving shaft, a driven shaft, a pinion rotatablewith the driving shaft, a clutch member rotatable with the driven shaft, a connection between said pinion and said clutch memberpreventing axial motion and permitting angular motion of one of said parts relatively to the other, said parts being supported by said driven shaft, said pinion being movable angularly and longitudinally on said shaft and said clutch member being capable of longitudinal motion only on said shaft, a second clutch member rigidly secured to said pinion, a third clutch member secured to said driven shaft for engaging said second clutch member, a train of gears for engaging said pinion, one of the gears of said train being rotatable on said driven shaft, a fourth clutch member carried said gear for engaging the first men-' tioned clutch member, reversing gears, and means for including :said reversing gears in said train of gears. p c a I 36." In a transmission mechanism, the combination of a power shaft, a driving shaft, a driven shaft, a main clutch between said power shaft and said driving shaft, two sets of clutch members for driving. said driven shaft from said driving shaft, a com- 1 mon operating mechanism for setting said main clutch and engaging eitherset of said clutch members when said main clutch is but partly set, continued motion of said operating mechanism serving to fully set said main clutch, reversing gears, and means for connecting said driving shaft with said driven shaft through said reversing gears.

37. In a transmission mechanism, the

combination of a power shaft, a driving shaft, a driven shaft, a main clutch between said power shaft and said driving shaft,two sets of clutch members for driving said driven shaft from said driving shaft, a com- 'mon operating mechanism'for setting said main clutchand engaging either set or said clutch members when said main clutch is but partly set, continued motion of said operating mechanism serving to fully set said mam clutch, reducing gearing between said dr1v ing and said driven shafts,1reversing gears, and means for connecting said drivingshaft with said driven shaft through said reversinggears. 1 1" 38. In a transmission gearing, the combination of a power shaft, a driving shaft, a driven shaft, a main clutch between said power shaft and said driving-shaft, a treadle having upper,-lower and middle operating ositions, devices between said treadle and said clutch for setting said clutch for the CLO upper and lower positions of said treadle and releasing said clutch for the middle position thereof, clutch members between said driving and said driven shafts, devices between said treadle and said clutch members for engaging said clutch members by motion of said treadle to its lower position before gears and menas for connecting said driving shaft with said driven shaft through 10 said reversing gears. V

In .witness whereof, I hereunto subscri lzoe my name this 22nd day of June, A. D. 191 7 AUGUST J MEYER. 

